Conditioning doesn't help at all, what it might do is damage the cells in the battery by forcing it to discharge to a point nearly safety limits. You're better off calibrating the battery by wiping battery stats(it's a file in the system that gets deleted actually), which can be done via an app or recovery. If done in an app, make sure it can read mV. Fully charged on the stock bp6x is around 4215mV.
Edit. I'm still getting great life, overnight just letting it sit only lost 5% in about 8 hours.

I have the 8/2 nightly and am having very poor battery life also (noticeably worse than blur) Which sucks, because other than a few minor bugs this is a great rom, and I really don't want to go back- but a few hours use drains me completely and I also have moto's extended battery.

Conditioning doesn't help at all, what it might do is damage the cells in the battery by forcing it to discharge to a point nearly safety limits. You're better off calibrating the battery by wiping battery stats(it's a file in the system that gets deleted actually), which can be done via an app or recovery. If done in an app, make sure it can read mV. Fully charged on the stock bp6x is around 4215mV.

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Conditioning is a generic term for a process that, when completed, improves your battery life in some fashion. The steps of the process can be as simple as wiping battery stats while the phone is fully charged. These steps vary depending on the type of battery. I was suggesting he carry out the appropriate steps for his device. Nothing more... Clockwork can do it, but an app like Battery Calibration makes it easier:

I have the 8/2 nightly and am having very poor battery life also (noticeably worse than blur) Which sucks, because other than a few minor bugs this is a great rom, and I really don't want to go back- but a few hours use drains me completely and I also have moto's extended battery.

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How much is the screen on. That's a huge battery killer. I also use juice defender to turn off 3g and wifi when the screen is off. So that's a big help.